<template>
  <div class="tabs">
    <el-tag
      v-for="(tag, index) in tags"
      :key="tag.name"
      :closable="tag.name !== 'home'"
      :effect="$route.name === tag.name ? 'dark' : 'plain'"
      @click="changeMenu(tag)"
      @close="handleClose(tag, index)"
      size="small"
    >
      {{ tag.label }}
    </el-tag>
  </div>
</template>

<script>
import {mapState, mapMutations} from 'vuex'
export default {
  name: "CommonTag",
  data() {
    return {
    }
  },
  computed: {
    ...mapState({
      tags: state => state.tabsList
    })
  },
  methods: {
    ...mapMutations({
      close: 'closeTag'
    }),
    changeMenu(item) {
      this.$router.push({ name: item.name })
    },
    handleClose(tag, index) {
      const length = this.tags.length - 1
      this.close(tag)
      if (tag.name !== this.$router.name) {
        return;
      }
      if(index === length) {
        this.$router.push({
          name: this.tags[index - 1].name
        })
      }else {
        this.$router.push({
          name: this.tags[index].name
        })
      }
    }
  }
}
</script>

<style lang="less" scoped>
  .tabs {
    padding: 20px;
    .el-tag {
      margin-right: 15px;
      cursor: pointer;
    }
  }
</style>
